Rock Band 4 won't get any more DLC because we're living in Fortnite's world now
Rock Band 4 never made it to PC. Developer Harmonix said in 2015 that it was uncertain whether there was a sufficient audience for the game on PC, and then in 2016 it proved that worry valid by launching a crowdfunding campaign for a PC version that barely achieved half of its $1.5 million goal. But none of that matters now anyway, because Harmonix announced today that January 25 will be the end of the road for Rock Band 4 DLC releases.